Double Regulating Valve - KE KELIT NZ · Double Regulating Valve Vertex. 2. 3 Table of contents...

Double Regulating Valve Vertex

3

Table of contents

Chapter Nexus Valve Vertex DN 10-50

1. Safety instructions 41.1 Rules/regulations 41.2 Intended use 51.3 Initial operation 51.4 Working on the system 51.5 Liability 5

2. Introduction 62.1 Description 62.2 Benefits 62.3 Design 72.4 Flow balancing 72.5 Operation 82.6 Mounting 10

3. Applications 11

4. Product data sheet 154.1 Product finder 154.2 Nexus Valve Vertex DN 10-50 164.2.1 DN 10-50 female/female 164.2.2 With drain – DN 10-50 female/female 184.3 Flow diagrams 204.4 Valve settings 274.5 Measuring signal diagrams 344.6 Measuring accuracy 41

5. Accessories 45

6. Sizing example 466.1 Nexus Valve Vertex system sizing 466.2 General specifications DN 10-50 49

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Please read the instructions carefully before installationThe installation and initial operation of the assembly may be carried out only by an authorised specialist company.Prior to starting work, familiarise yourself with all parts and how they are handled.The application examples in these operating instructions are ideas sketched out. Local laws and regulations have to be observed.

Target group:These instructions are intended for authorised specialists exclusively. Work on the heating system, the potable water as well as gas and power network may be carried out by specialists only.

Please follow these safety instructions carefully in order to avoid hazards and damage to people and property.

1.1 Rules/regulations

Please observe the applicable accident prevention regulations, the environmental legislation and the legal rules for mounting, installation and operation. Moreover, please observe the appropriate guidelines of German standard DIN, EN, DVGW, VDI and VDE (including lightning protection) as well as all current relevant country-specific standards, laws and regulations. Old and newly enforced regulations and standards shall apply, if they are relevant for the indivi-dual case. Moreover, the regulations of your local energy supply company have to be observed.

Electrical connection:Electrical wiring work may be carried out by qualified electricians only. The VDE regulations and the specifi-cations of the relevant energy supply company have to be met.

Excerpt:Installation and construction of heat generators as well as the drinking water heaters:DIN EN 4753, Part 1: Water heater and water heating plants for potable and process water.DIN EN 12828 Heating systems in buildings.DIN 18 421: Insulation work on technical plantsAV B Wa s V Regulations concerning the general conditions for the supply with waterDIN EN 806 ff.: Technical rules for potable water installationDIN 1988 ff.: Technical rules for potable water installation (national addition)DIN EN 1717: Protection of potable water against contaminationsDIN 4751: Safety equipment

Electrical connection:VDE 0100: Erection of electrical equipment, grounding, protective conductor, potential equalisation conductor.VDE 0701: Repair, modification and testing of electrical devices.VDE 0185: General aspects on the erection of lightning protection systems.VDE 0190: Main potential equalisation of electrical plants.VDE 0855: Installation of antenna plants (shall apply mutatis mutandis).

1. Safety instructions

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Additional remarks:VDI 6002 Sheet 1: General principles, system technology and use in house buildingVDI 6002, Sheet 2: Use in students’ hostels, retirement homes, hospitals, indoor swimming pools and on camping facilities

Caution:Prior to any electrical wiring work on pumps and controls, these modules have to be disconnected from voltage correctly.

1.2 Intended use

Inexpert installation as well as use for a purpose not intended of the assembly shall rule out all warranty claims.All shut-off valves may be closed by an approved specialist only in case of servicing as otherwise the safety valves are not effective.

Do not modify the electrical components, the construction or the hydraulic components! You will impair the safe function of the plant otherwise.

1.3 Initial operation

Prior to the initial operation, the plant has to be tested for tightness, correct hydraulic connection as well as accurate and correct electrical connection. In addition, the plant has to be flushed correctly and/as required in keeping with German standard DIN 4753. The initial operation has to be carried out by a trained specialist, which has to be recor-ded in writing. In addition, the settings have to be put down in writing. The technical documentation has to be available at the device.

1.4 Working on the system

The plant has to be de-energised and to be checked for the absence of voltage (such as on the separate fuse or a master switch). Secure the plant against unintentional restart.(If gas is used as fuel, close the gas shut-off valve and secure against unintentional opening.) Repair work on compo-nent parts with a safety-relevant function is impermissible.

1.5 Liability

We reserve all copyrights for this document. Wrongful use, in particular reproduction and forwarding to third parties shall not be permitted.These installation and operating instructions shall have to be handed to the customer. The executing and/or autho-rised tradesperson (such as fitter) shall have to explain the function and operation of the plant to the customer in an intelligible manner.

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Nexus Valve Vertex

Variable Orifi ce Double Regulating Valve (VODRV)

DN 10- 503/8” - 2”

2.1 Description

Nexus Valve Vertex is a variable orifice double regulating valve for balancing water-based heating and cooling systems. The balancing performed ensures the required distribution of flow in individual risers and terminal units. Applications are typi-cally central heating or cooling systems, as well as fan coil units in multi-storey and high-rise buildings.

Nexus Valve Vertex is available in valves DN 10 to DN 50, manufactured in dezincification resistant brass (DZR). For valve sizes DN 65 - 600 the Nexus Valve Fluctus valve range is recommended.

Nexus Valve Vertex can optionally be provided with a drain valve. Apart from system draining, the drain valve can also be used to connect a capillary tube from the Nexus Valve Passim differential pressure control valve. The Nexus Valve Passim and Nexus Valve Vertex valves are in combination used for differential pressure control and maximum flow limiting.

2.2 Benefits

• Product range from DN 10 to DN 50 for heating and cooling systems• Measuring, pre-setting, draining and isolation functions all in one unit• Compact design for installations in confined spaces• Flow direction is irrelevant for the valve installation• Pre-setting is fast and simple using an Allen key• Setting scale is precise and easy to read• Isolation of flow is simply done using the quarter-turn handle• No change in pre-setting when isolated and re-opened• Drain valve can be rotated 360° for easy service• Perfect as a partner valve for the Nexus Valve Passim, differential pressure control valves

2. Introduction

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2.3 Design

The Nexus Valve Vertex design enables flow measuring, pre-setting and isolation functions all in one unit. The regula-tion spindle inside the built-in ball valve is set independently from the isolation function of the ball valve. This allows system flow to be isolated and re-opened again without changing the valve setting. Isolating the system flow is done by a simple quarter-turn of the valve handle. The quarter-turn handle position also makes it easy to identify if the valve is open or closed.

The compact design and the flow bi-directionality ensures easy and flexible installation of Nexus Valve Vertex in any system.

Nexus Valve Vertex is optionally provided with a drain valve. This drain valve can be rotated 360° for easy system servicing.

1

2

4

3

4

6

5

1 - Allen key for presetting2 - Regulating spindle3 - Ball valve for flow isolation4 - Isolation handle5 - Optional drain valve6 - Measuring points

2.4 Flow balancing

Nexus Valve Vertex is provided with measuring points for differential pressure measurement. When the Nexus Valve Vertex is pre-set the flow can be validated using any standard flowmeter. Setting is easily done using an Allen key to move the regulating spindle inside the valve and obtain its required position. The setting scale on top of the valve handle displays the precise setting for an – even from a distance – easy read-out.

Nexus Valve provides a dedicated balancing computer, having all Nexus Valve valve data pre-stored. To measure flow the flowmeter is connected to the measuring points of the valve and the required Nexus Valve Vertex is chosen from the list to get the flow reading.

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2. Introduction

Nexus Valve Vertex can be installed in any position, also regardless of the flow direction. This ensures a flexible and error-free installation with no limitation to supply or return line installations.

Flow direction across the Nexus Valve Vertex is irrelevant for the valve performance.

Nexus Valve Vertex is besides the standard threaded connection also available with a selection of Tectite (push fitting or XPress (press fitting) connectors.

2.5 Operation

Nexus Valve Vertex can be used as a stand alone balancing valve to provide the desired flow distribution within the controlled system.

Nexus Valve Vertex can be used as a stand alone valve for flow balancing and system service.

The optional drain valve of the Nexus Valve Vertex enables at the same time a capillary tube connection to the Nexus Valve Passim, a differential pressure control valve. By combining Nexus Valve Vertex and Nexus Valve Passim in a system branch with terminal units, pressure fluctuations from the remaining part of the system will be eliminated within the branch. The designed flow set on the Nexus Valve Vertex valve will never be exceeded due to the constant differential pressure regulation performed. System commissioning of a Nexus Valve Vertex valve in combination with a Nexus Valve Passim is quick and cost efficient.

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Nexus Valve Vertex as a partner valve for the Nexus Valve Passim differential pressure control valve.

Nexus Valve Vertex and Nexus Valve Passim can be connected in two ways, having the Nexus Valve Vertex valve in or outside the controlled circuit.

Having the capillary tube connected to the drain valve of the measuring point with the greater measured pressure, the Nexus Valve Vertex valve is inside the circuit controlled by the differential pressure control valve. This type of installation is normally used in heating systems with non-presettable thermostatic radiator valves. In this case the pressure loss across the Nexus Valve Vertex valve needs to be taken into account when setting the differential pressure control valve.

Nexus Valve Vertex inside the system circuit controlled by the Nexus Valve Passim pressure control valve.

Having the capillary tube connected to the drain valve of the measuring point with the lower measured pressure, the Nexus Valve Vertex valve is outside the circuit controlled by the differential pressure control valve. This type of installation is normally used in heating systems with pre-settable thermostatic radiator valves. This installation is also advised in cooling and heating systems with balancing valves installed at the terminal units to ensure the required flow. In this case the pressure loss across the Nexus Valve Vertex valve is not taken into account when setting the differential pressure control valve.

Nexus Valve Vertex outside the circuit controlled by the Nexus Valve Passim pressure control valve.

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2. Introduction

2.6 Mounting

Nexus Valve Vertex can be installed regardless of flow direction and 360° around the pipe axis. It requires a straight pipe of 5 × pipe diameter when installed directly after a bend, and 2 × pipe diameter of straight piping when installed directly before a bend. A straight pipe of 10 × pipe diameter is required when Nexus Valve Vertex is installed directly after the pump. Nexus Valve Vertex is set using an Allen key to adjust the valve until the required flow is obtained.

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3. Applications

Application 1 - Underfloor heating system

In an underfloor heating system Nexus Valve Vertex ensures the required flow distribution to all manifolds. Actuators connected to the room thermostat, or the BMS system, control the flow in each loop by opening or closing two-way valves in reference to the air temperature.

The flow and temperature control ensures the required indoor thermal comfort.

Application 2 - Fan coil system with two-way motorized valves (variable flow system)

In a variable flow system with two-way motorized valves installed, the Nexus Valve Vertex provides hydronic balance and ensures that all fan coil units have the desired flow at maximum load conditions.

Actuators installed on two-way motorized valves, connected to the room thermostat or BMS system, control the flow in each fan coil unit by opening or closing twoway valves in reference to the air temperature.

The flow and temperature controlensures the required indoor thermalcomfort.

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3. Applications

Application 3 - Fan coil system with three-way motorized valves (constant flow system)

In a constant flow system with three-way motorized valves, the Nexus Valve Vertex provides hydronic balance and ensures that all units have the required flow at maximum load conditions. This is possible as the Nexus Valve Vertex valves ensure the same pressure loss in the terminal unit branch regardless of the threeway valve position.

Actuators installed on three-way motorized valves, connected to a room thermostat or BMS system, control the flow in each unit by opening or closing the threeway valves in reference to the air temperature.

The flow and temperature controlensure the required indoor thermalcomfort.

Application 4 - Central heating system with differential pressure control valves

In a central heating system branch having Nexus Valve Vertex and Nexus Valve Passim differential pressure control valves installed, pressure fluctuations from the remaining part of the system will be eliminated within the branch. This provides stable pressure and flow conditions, and prevents also possible noise nuisance caused by high differential pressure across radiator thermostats, two-way control valves, or other components in the system.

Balancing a system comprisingNexus Valve Vertex and Nexus Valve Passim is quick and cost efficient.

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Application 4A - Central heatingsystem with differential pressurecontrol valves

Central heating system with Nexus Valve Vertex and Nexus Valve Passim differential pressure control valves connected in a way so that the Nexus Valve Vertex is inside the controlled circuit. By connecting a capillary tube to the drain valve of the Nexus Valve Vertex in the measuring point, with the higher measured pressure, the Nexus Valve Vertex valve is inside the circuit controlled by the Nexus Valve Passim differential pressure control valve. This type of application is used in heating systems with non-presettable thermostatic radiator valves. In this case the pressure loss across the Nexus Valve Vertex valve needs to be taken into account when setting the differential pressure control valve. Flow obtained across the Nexus Valve Vertex valve is kept constant due to constant differential pressure (as long as there is no call for a terminal unit load change).

Application 4B - Central heatingsystem with differential pressurecontrol valves

Central heating system with Nexus Valve Vertex and Nexus Valve Passim differential pressure control valves connected in a way so that the Nexus Valve Vertex is inside the controlled circuit. By connecting a capillary tube to the drain valve of the Nexus Valve Vertex in the measuring point, with the lower measured pressure, the Nexus Valve Vertex is outside the circuit controlled by the Nexus Valve Passim differential pressure control valve. This type of application is used in heating systems with pre-settable thermostatic radiator valves. In this case the pressure loss across the Nexus Valve Vertex is not taken into account when setting the differential pressure control valve. The Nexus Valve Vertex valve can also be used as a measuring valve to check if the thermostatic radiator valve pre-setting is correct and the designed flow in the riser is achieved.

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3. Applications

Application 5 - One pipe heating system

The Nexus Valve Vertex installed in a one pipe heating system ensures the desired flow distribution through all branches and sections.

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4. Product data sheet

4.1 Product finder

72.0 108.0 216 288 360144

l/s

l/h

Flow rate

0.02 0.030.010.005 0.007 0.04 0.06 0.08 0.1 0.2 0.3 0.4 0.5 0.6 0.8 1.0

36.0

4.0 3.0 2.0

720 1080 1440 1800 2160 2880 3600 7200 10800 1440018.0 25.2

0.003 0.004

10.8 14.4

0.006

DN 32

DN 40

DN 25

DN 50

DN 20

DN 15

DN 10

Flow range Kvsm3/h

Dimension Section

l/s l/h

0.00314-0.074 11-270 0.67 DN 10 4.3 - 20

0.0054-0.148 19-530 1.71 DN 15 4.3 - 21

0.015-0.325 55-1170 4.40 DN 20 4.3 - 22

0.023-0.603 84-2170 7.46 DN 25 4.3 - 23

0.087-1.25 310-4500 13.50 DN 32 4.3 - 24

0.13-1.88 450-6770 23.70 DN 40 4.3 - 25

0.27-3.51 960-12640 34.50 DN 50 4.3 - 26

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4.2 Nexus Valve Vertex DN 10-50

4.2.1 DN 10-50 female/female

Dimensions Specifications

Max. temperature 120°CMin. temperature -20°CMax. pressure 25 barPress ends 16 barMarking on valve (Handle) DN, Allen key size (Valve body) DN, PN Connection Female thread ISO 7/1 parallel Valve housing DR Brass CW602N CuZn36Pb2AsBall and needle DR Brass CW602N (chrome plated)Valve handle Polyamide (PA6.6 30%GF)Sealings O-rings EPDM Gaskets PTFE Test point sealing EPDM

DN A (mm) B (mm) C (mm) D (mm)

DN 10 89 110 72 68

DN 15 89 103 58 68

DN 20 94 106 63 74

DN 25 102 112 76 80

DN 32 137 165 89 88

DN 40 144 170 98 94

DN 50 159 180 119 106

Note! Information on insulation jackets, press adaptors and other is provided in the chapter Accessories.

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Valve Article Nom.Inch

Kvsm3/h

Flow rangel/h

DN 10

N80597.699 “ 0.67 11-270

DN 15

N80597.700 ½“ 1.71 19-530

DN 20

N80597.701 ¾“ 4.40 55-1170

DN 25

N80597.702 1“ 7.46 84-2170

DN 32

N80597.703 1 ¼“ 13.5 310-4500

DN 40

N80597.704 1 ½“ 23.7 450-6670

DN 50

N80597.705 2“ 34,5 960-12640

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4.2.2 With drain – DN 10-50 female/female

Dimensions Specifications

Max. temperature 120°CMin. temperature -20°CMax. pressure 25 barPress ends 16 barMarking on valve (Handle) DN, Allen key size (Valve body) DN, PN Connection Female thread ISO 7/1 parallel Valve housing DR Brass CW602N CuZn36Pb2AsBall and needle DR Brass CW602N (chrome plated)Valve handle Polyamide (PA6.6 30%GF)Sealings O-rings EPDM Gaskets PTFE Test point sealing EPDM

DN A (mm) B (mm) C (mm) D (mm) E (mm)

DN 10 89 106 63 95 36

DN 15 89 103 58 95 36

DN 20 94 106 63 101 33

DN 25 102 112 76 107 30

DN 32 137 165 89 114 22

DN 40 144 170 98 120 18

DN 50 159 180 119 133 10

Note! Information on insulation jackets, press adaptors and other is provided in the chapter Accessories.

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Valve Article Nom.Inch

Kvsm3/h

Flow rangel/h

DN 10

N80597.7112 “ 0.67 11-270

DN 15

N80597.706 ½“ 1.71 19-530

DN 20

N80597.707 ¾“ 4.40 55-1170

DN 25

N80597.708 1“ 7.46 84-2170

DN 32

N80597.709 1 ¼“ 13.5 310-4500

DN 40

N80597.710 1 ½“ 23.7 450-6670

DN 50

N80597.711 2“ 34,5 960-12640

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4.3 Flow diagrams

The graph is used to determine the total pressure loss across the Nexus Valve Vertex valve at a given pre-setting and flow rate.

The minimum digital scale setting is 0.0 and the maximum setting (fully open valve) is 9.9. One hundred different positions, at an increment of 0.1, are possible, and each position corresponds to a different Kv value.

The Kv value and the Kvs value (at a fully open valve) refer to the pressure loss across the entire valve. These values are used for system sizing and pump selection. The Kv and the Kvs values differ from the Kvm value which is connected to the pressure loss at the measuring points. This difference is a result of turbulence occurring in the measuring area. The Kvm value is used during system balancing to secure correct flow readings from the flowmeter. The Kvm value corresponding to a specific Nexus Valve Vertex valve setting is typed into the flowmeter for a flow read-out.

A pressure loss of up to 250 kPa is allowed across the Nexus Valve Vertex valve. Within the working range it should be assured that cavitation does not occur at any given pressure loss. Valve sizing example is provided in chapter 6.

DN 10 - female/female

0.01 0.10

0.00314 0.07

360.0272

0.04144

0.03108

0.05180

0.08288252 360

2.52.0

1.00.0 0.51.5

6.0

5.0

4.0

3.0

9.08.07.0

Flow (l/s)(l/h)

Pressure drop across valve kPa250

200

1009080706050

40

30

20

10987654

3

2

1

bar2.5

2.0

1.00.90.80.70.60.5

0.4

0.3

0.2

0.10.090.080.070.060.050.04

0.03

0.02

0.01

Position

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Pressure drop across valve Position

Flowl/sl/h

kPa250

200

10090807060

50

40

30

20

1098765

4

3

2

1

9.99.0

8.0

7.0

6.0

5.0

4.0

3.02.01.00.0

bar2.5

2.0

1.00.90.80.70.6

0.5

0.4

0.3

0.2

0.10.090.080.070.060.05

0.04

0.03

0.02

0.01 0.0054 0.007 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.10 0.148

19.4 25.2 36 72 108 144 180 216 252 288 360 533

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9.9

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.01.00.0


Flowl/sl/h

kPa250

200

10090807060

50

40

30

20

1098765

4

3

2

1

bar2.5

2.0

1.00.90.80.70.6

0.5

0.4

0.3

0.2

0.10.090.080.070.060.05

0.04

0.03

0.02

0.01 0.015 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.20 0.325

55.1 72 108 144 180 216 252 288 324 360 720 1170

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9.99.0

8.0

7.0

6.0

5.0

4.0

3.02.01.00.0


Flowl/sl/h

kPa250

200

10090807060

50

40

30

20

1098765

4

3

2

1

bar2.5

2.0

1.00.90.80.70.6

0.5

0.4

0.3

0.2

0.10.090.080.070.060.05

0.04

0.03

0.02

0.01 0.023 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.20 0.30 0.40 0.50 0.603

83.5 108 144 180 216 252 288 324 360 720 1080 1440 1800 2171

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9.9

9.08.0

7.0

6.0

5.0

4.0

3.0

2.01.00.0


Flowl/sl/h

kPa250

200

10090807060

50

40

30

20

1098765

4

3

2

1

bar2.5

2.0

1.00.90.80.70.6

0.5

0.4

0.3

0.2

0.10.090.080.070.060.05

0.04

0.03

0.02

0.01 0.087 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.25

313 360 720 1080 1440 1800 2160 2520 2880 3240 3600 4500

25


9.9

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.01.00.0


Flowl/sl/h

kPa250

200

10090807060

50

40

30

20

1098765

4

3

2

1

bar2.5

2.0

1.00.90.80.70.6

0.5

0.4

0.3

0.2

0.10.090.080.070.060.05

0.04

0.03

0.02

0.01 0.13 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.88

452 720 1080 1440 1800 2160 2520 2880 3240 3600 6768

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9.9

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.01.00.0


Flowl/sl/h

kPa250

200

10090807060

50

40

30

20

1098765

4

3

2

1

bar2.5

2.0

1.00.90.80.70.6

0.5

0.4

0.3

0.2

0.10.090.080.070.060.05

0.04

0.03

0.02

0.01 0.27 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 2.0 3.0 3.51

964 1080 1440 1800 2160 2520 2880 3240 3600 7200 10800 12636

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4.4 Valve settings

Kvs value and Kv values at specific valve settings refer to the pressure loss across the valve and should be used for system design and pump sizing.


SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h0.0 0.065 1.0 0.144 2.0 0.227 3.0 0.311 4.0 0.392

0.1 0.073 1.1 0.152 2.1 0.235 3.1 0.319 4.1 0.400

0.2 0.080 1.2 0.160 2.2 0.244 3.2 0.328 4.2 0.407

0.3 0.088 1.3 0.168 2.3 0.252 3.3 0.336 4.3 0.415

0.4 0.096 1.4 0.177 2.4 0.261 3.4 0.344 4.4 0.423

0.5 0.104 1.5 0.185 2.5 0.269 3.5 0.352 4.5 0.430

0.6 0.112 1.6 0.193 2.6 0.277 3.6 0.360 4.6 0.438

0.7 0.120 1.7 0.202 2.7 0.286 3.7 0.368 4.7 0.445

0.8 0.128 1.8 0.210 2.8 0.294 3.8 0.376 4.8 0.452

0.9 0.136 1.9 0.218 2.9 0.303 3.9 0.384 4.9 0.459

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h5.0 0.466 6.0 0.530 7.0 0.582 8.0 0.622 9.0 0.652

5.1 0.473 6.1 0.536 7.1 0.586 8.1 0.625 9.1 0.654

5.2 0.480 6.2 0.541 7.2 0.591 8.2 0.628 9.2 0.657

5.3 0.486 6.3 0.547 7.3 0.595 8.3 0.631 9.3 0.660

5.4 0.493 6.4 0.552 7.4 0.599 8.4 0.635 9.4 0.662

5.5 0.499 6.5 0.557 7.5 0.603 8.5 0.638 9.5 0.665

5.6 0.506 6.6 0.563 7.6 0.607 8.6 0.641 9.6 0.668

5.7 0.512 6.7 0.568 7.7 0.611 8.7 0.643 9.7 0.670

5.8 0.518 6.8 0.572 7.8 0.614 8.8 0.646 9.8 0.673

5.9 0.524 6.9 0.577 7.9 0.618 8.9 0.649 9.9 0.675

Note! In order to provide high measuring accuracy the entire setting range applies – except settings 0.0-0.9.

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SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h0.0 0.06 1.0 0.11 2.0 0.25 3.0 0.40 4.0 0.55

0.1 0.06 1.1 0.12 2.1 0.26 3.1 0.41 4.1 0.57

0.2 0.06 1.2 0.13 2.2 0.28 3.2 0.43 4.2 0.58

0.3 0.06 1.3 0.15 2.3 0.29 3.3 0.44 4.3 0.60

0.4 0.07 1.4 0.16 2.4 0.31 3.4 0.46 4.4 0.62

0.5 0.07 1.5 0.17 2.5 0.32 3.5 0.47 4.5 0.63

0.6 0.08 1.6 0.19 2.6 0.34 3.6 0.49 4.6 0.65

0.7 0.08 1.7 0.20 2.7 0.35 3.7 0.50 4.7 0.67

0.8 0.09 1.8 0.22 2.8 0.37 3.8 0.52 4.8 0.68

0.9 0.10 1.9 0.23 2.9 0.38 3.9 0.53 4.9 0.70

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h5.0 0.72 6.0 0.91 7.0 1.13 8.0 1.35 9.0 1.55

5.1 0.74 6.1 0.93 7.1 1.15 8.1 1.37 9.1 1.57

5.2 0.76 6.2 0.96 7.2 1.18 8.2 1.40 9.2 1.59

5.3 0.77 6.3 0.98 7.3 1.20 8.3 1.42 9.3 1.61

5.4 0.79 6.4 1.00 7.4 1.22 8.4 1.44 9.4 1.63

5.5 0.81 6.5 1.02 7.5 1.24 8.5 1.46 9.5 1.64

5.6 0.83 6.6 1.04 7.6 1.27 8.6 1.48 9.6 1.66

5.7 0.85 6.7 1.06 7.7 1.29 8.7 1.50 9.7 1.68

5.8 0.87 6.8 1.09 7.8 1.31 8.8 1.52 9.8 1.69

5.9 0.89 6.9 1.11 7.9 1.33 8.9 1.54 9.9 1.71


29


SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h0.0 0.12 1.0 0.31 2.0 0.64 3.0 0.98 4.0 1.33

0.1 0.13 1.1 0.34 2.1 0.67 3.1 1.02 4.1 1.37

0.2 0.14 1.2 0.37 2.2 0.70 3.2 1.05 4.2 1.40

0.3 0.16 1.3 0.40 2.3 0.74 3.3 1.09 4.3 1.44

0.4 0.17 1.4 0.44 2.4 0.77 3.4 1.12 4.4 1.48

0.5 0.19 1.5 0.47 2.5 0.81 3.5 1.16 4.5 1.51

0.6 0.21 1.6 0.50 2.6 0.84 3.6 1.19 4.6 1.55

0.7 0.24 1.7 0.53 2.7 0.88 3.7 1.23 4.7 1.59

0.8 0.26 1.8 0.57 2.8 0.91 3.8 1.26 4.8 1.63

0.9 0.29 1.9 0.60 2.9 0.95 3.9 1.30 4.9 1.66

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h5.0 1.70 6.0 2.13 7.0 2.63 8.0 3.20 9.0 3.82

5.1 1.74 6.1 2.18 7.1 2.68 8.1 3.26 9.1 3.88

5.2 1.78 6.2 2.22 7.2 2.74 8.2 3.32 9.2 3.95

5.3 1.82 6.3 2.27 7.3 2.79 8.3 3.38 9.3 4.01

5.4 1.87 6.4 2.32 7.4 2.85 8.4 3.44 9.4 4.08

5.5 1.91 6.5 2.37 7.5 2.91 8.5 3.50 9.5 4.14

5.6 1.95 6.6 2.42 7.6 2.96 8.6 3.57 9.6 4.21

5.7 1.99 6.7 2.47 7.7 3.02 8.7 3.63 9.7 4.27

5.8 2.04 6.8 2.52 7.8 3.08 8.8 3.69 9.8 4.34

5.9 2.08 6.9 2.57 7.9 3.14 8.9 3.76 9.9 4.40


30



SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h0.0 0.34 1.0 0.48 2.0 0.93 3.0 1.55 4.0 2.21

0.1 0.34 1.1 0.51 2.1 0.98 3.1 1.62 4.1 2.27

0.2 0.34 1.2 0.55 2.2 1.04 3.2 1.68 4.2 2.34

0.3 0.35 1.3 0.59 2.3 1.10 3.3 1.75 4.3 2.40

0.4 0.35 1.4 0.63 2.4 1.16 3.4 1.81 4.4 2.47

0.5 0.37 1.5 0.67 2.5 1.23 3.5 1.88 4.5 2.53

0.6 0.38 1.6 0.72 2.6 1.29 3.6 1.95 4.6 2.59

0.7 0.40 1.7 0.77 2.7 1.35 3.7 2.01 4.7 2.66

0.8 0.42 1.8 0.82 2.8 1.42 3.8 2.08 4.8 2.72

0.9 0.45 1.9 0.87 2.9 1.48 3.9 2.14 4.9 2.78

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h5.0 2.85 6.0 3.51 7.0 4.31 8.0 5.35 9.0 6.57

5.1 2.91 6.1 3.58 7.1 4.40 8.1 5.47 9.1 6.69

5.2 2.97 6.2 3.65 7.2 4.50 8.2 5.59 9.2 6.81

5.3 3.04 6.3 3.73 7.3 4.59 8.3 5.71 9.3 6.92

5.4 3.10 6.4 3.80 7.4 4.69 8.4 5.83 9.4 7.03

5.5 3.17 6.5 3.88 7.5 4.80 8.5 5.96 9.5 7.13

5.6 3.23 6.6 3.96 7.6 4.90 8.6 6.08 9.6 7.23

5.7 3.30 6.7 4.04 7.7 5.01 8.7 6.20 9.7 7.32

5.8 3.37 6.8 4.13 7.8 5.12 8.8 6.33 9.8 7.40

5.9 3.44 6.9 4.22 7.9 5.24 8.9 6.45 9.9 7.46


31


SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h0.0 1.85 1.0 2.45 2.0 3.28 3.0 4.20 4.0 5.24

0.1 1.89 1.1 2.53 2.1 3.36 3.1 4.30 4.1 5.34

0.2 1.94 1.2 2.61 2.2 3.45 3.2 4.40 4.2 5.46

0.3 1.99 1.3 2.69 2.3 3.54 3.3 4.50 4.3 5.57

0.4 2.05 1.4 2.77 2.4 3.63 3.4 4.60 4.4 5.69

0.5 2.11 1.5 2.85 2.5 3.73 3.5 4.70 4.5 5.80

0.6 2.17 1.6 2.93 2.6 3.82 3.6 4.81 4.6 5.92

0.7 2.24 1.7 3.02 2.7 3.91 3.7 4.91 4.7 6.04

0.8 2.31 1.8 3.10 2.8 4.01 3.8 5.02 4.8 6.16

0.9 2.38 1.9 3.19 2.9 4.10 3.9 5.13 4.9 6.29

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h5.0 6.41 6.0 7.71 7.0 9.08 8.0 10.46 9.0 11.91

5.1 6.54 6.1 7.84 7.1 9.21 8.1 10.60 9.1 12.07

5.2 6.66 6.2 7.98 7.2 9.35 8.2 10.74 9.2 12.23

5.3 6.79 6.3 8.12 7.3 9.49 8.3 10.88 9.3 12.40

5.4 6.92 6.4 8.25 7.4 9.63 8.4 11.02 9.4 12.57

5.5 7.05 6.5 8.39 7.5 9.76 8.5 11.16 9.5 12.75

5.6 7.18 6.6 8.53 7.6 9.99 8.6 11.31 9.6 12.93

5.7 7.31 6.7 8.66 7.7 10.04 8.7 11.45 9.7 13.12

5.8 7.44 6.8 8.80 7.8 10.18 8.8 11.60 9.8 13.33

5.9 7.58 6.9 8.94 7.9 10.32 8.9 11.75 9.9 13.48

32



SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h0.0 2.70 1.0 3.57 2.0 4.96 3.0 6.64 4.0 8.45

0.1 2.75 1.1 3.69 2.1 5.12 3.1 6.82 4.1 8.63

0.2 2.82 1.2 3.81 2.2 5.28 3.2 6.99 4.2 8.82

0.3 2.89 1.3 3.94 2.3 5.44 3.3 7.17 4.3 9.01

0.4 2.97 1.4 4.08 2.4 5.61 3.4 7.35 4.4 9.20

0.5 3.05 1.5 4.22 2.5 5.78 3.5 7.53 4.5 9.39

0.6 3.14 1.6 4.36 2.6 5.95 3.6 7.71 4.6 9.58

0.7 3.24 1.7 4.51 2.7 6.12 3.7 7.90 4.7 9.77

0.8 3.34 1.8 4.65 2.8 6.29 3.8 8.08 4.8 9.96

0.9 3.45 1.9 4.81 2.9 6.46 3.9 8.26 4.9 10.15

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h5.0 10.35 6.0 12.39 7.0 14.70 8.0 17.40 9.0 20.55

5.1 10.54 6.1 12.61 7.1 14.95 8.1 17.69 9.1 20.89

5.2 10.74 6.2 12.83 7.2 15.20 8.2 17.99 9.2 21.24

5.3 10.94 6.3 13.05 7.3 15.46 8.3 18.30 9.3 21.58

5.4 11.14 6.4 13.27 7.4 15.72 8.4 18.61 9.4 21.93

5.5 11.35 6.5 13.50 7.5 15.99 8.5 18.92 9.5 22.28

5.6 11.55 6.6 13.73 7.6 16.26 8.6 19.24 9.6 22.63

5.7 11.76 6.7 13.97 7.7 16.54 8.7 19.56 9.7 22.99

5.8 11.97 6.8 14.21 7.8 16.82 8.8 19.89 9.8 23.34

5.9 12.18 6.9 14.45 7.9 17.11 8.9 20.22 9.9 23.68

33


SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h0.0 5.71 1.0 7.03 2.0 9.22 3.0 11.48 4.0 13.85

0.1 5.75 1.1 7.23 2.1 9.45 3.1 11.71 4.1 14.10

0.2 5.82 1.2 7.44 2.2 9.68 3.2 11.94 4.2 14.36

0.3 5.91 1.3 7.66 2.3 9.90 3.3 12.17 4.3 14.62

0.4 6.02 1.4 7.88 2.4 10.13 3.4 12.40 4.4 14.89

0.5 6.15 1.5 8.10 2.5 10.35 3.5 12.64 4.5 15.16

0.6 6.30 1.6 8.32 2.6 10.58 3.6 12.87 4.6 15.43

0.7 6.47 1.7 8.55 2.7 10.81 3.7 13.11 4.7 15.71

0.8 6.65 1.8 8.77 2.8 11.03 3.8 13.36 4.8 16.00

0.9 6.83 1.9 9.00 2.9 11.26 3.9 13.60 4.9 16.28

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/hSetting

Kvs m³/h

SettingKvs

m³/h5.0 16.58 6.0 19.74 7.0 23.18 8.0 26.62 9.0 30.22

5.1 16.87 6.1 20.08 7.1 23.52 8.1 26.97 9.1 30.62

5.2 17.18 6.2 20.42 7.2 23.87 8.2 27.31 9.2 31.04

5.3 17.48 6.3 20.76 7.3 24.22 8.3 27.66 9.3 31.47

5.4 17.80 6.4 21.10 7.4 24.56 8.4 28.01 9.4 31.92

5.5 18.11 6.5 21.45 7.5 24.91 8.5 28.36 9.5 32.40

5.6 18.43 6.6 21.79 7.6 25.25 8.6 28.72 9.6 32.90

5.7 18.75 6.7 22.14 7.7 25.59 8.7 29.08 9.7 33.43

5.8 19.08 6.8 22.48 7.8 25.94 8.8 29.45 9.8 34.00

5.9 19.41 6.9 22.83 7.9 26.28 8.9 29.83 9.9 34.52

34


4.5 Measuring signal diagrams

The Kvm value of Nexus Valve Vertex refers to the pressure loss measured across the measuring points. The Kvm value is different from the Kv value.


SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

0.0 0.065 1.0 0.144 2.0 0.226 3.0 0.306 4.0 0.383

0.1 0.073 1.1 0.152 2.1 0.234 3.1 0.314 4.1 0.390

0.2 0.081 1.2 0.161 2.2 0.242 3.2 0.322 4.2 0.397

0.3 0.089 1.3 0.169 2.3 0.250 3.3 0.330 4.3 0.404

0.4 0.097 1.4 0.177 2.4 0.258 3.4 0.338 4.4 0.411

0.5 0.105 1.5 0.185 2.5 0.266 3.5 0.346 4.5 0.418

0.6 0.112 1.6 0.193 2.6 0.274 3.6 0.361 4.6 0.425

0.7 0.120 1.7 0.201 2.7 0.282 3.7 0.368 4.7 0.432

0.8 0.128 1.8 0.209 2.8 0.290 3.8 0.368 4.8 0.438

0.9 0.136 1.9 0.217 2.9 0.298 3.9 0.376 4.9 0.445

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

5.0 0.451 6.0 0.507 7.0 0.551 8.0 0.581 9.0 0.602

5.1 0.457 6.1 0.512 7.1 0.554 8.1 0.584 9.1 0.604

5.2 0.463 6.2 0.517 7.2 0.558 8.2 0.586 9.2 0.606

5.3 0.469 6.3 0.522 7.3 0.561 8.3 0.589 9.3 0.607

5.4 0.475 6.4 0.526 7.4 0.564 8.4 0.591 9.4 0.609

5.5 0.481 6.5 0.531 7.5 0.567 8.5 0.593 9.5 0.610

5.6 0.486 6.6 0.535 7.6 0.570 8.6 0.595 9.6 0.612

5.7 0.492 6.7 0.539 7.7 0.573 8.7 0.597 9.7 0.613

5.8 0.497 6.8 0.543 7.8 0.576 8.8 0.599 9.8 0.615

5.9 0.502 6.9 0.547 7.9 0.579 8.9 0.601 9.9 0.616

35


SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

0.0 0.06 1.0 0.11 2.0 0.25 3.0 0.39 4.0 0.54

0.1 0.06 1.1 0.12 2.1 0.26 3.1 0.41 4.1 0.56

0.2 0.06 1.2 0.13 2.2 0.28 3.2 0.42 4.2 0.57

0.3 0.06 1.3 0.15 2.3 0.29 3.3 0.44 4.3 0.59

0.4 0.07 1.4 0.16 2.4 0.31 3.4 0.45 4.4 0.61

0.5 0.07 1.5 0.17 2.5 0.32 3.5 0.47 4.5 0.62

0.6 0.08 1.6 0.19 2.6 0.34 3.6 0.48 4.6 0.64

0.7 0.08 1.7 0.20 2.7 0.35 3.7 0.50 4.7 0.65

0.8 0.09 1.8 0.22 2.8 0.37 3.8 0.51 4.8 0.67

0.9 0.10 1.9 0.23 2.9 0.38 3.9 0.53 4.9 0.69

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

5.0 0.70 6.0 0.88 7.0 1.09 8.0 1.29 9.0 1.48

5.1 0.72 6.1 0.90 7.1 1.11 8.1 1.31 9.1 1.49

5.2 0.74 6.2 0.92 7.2 1.13 8.2 1.33 9.2 1.51

5.3 0.76 6.3 0.94 7.3 1.15 8.3 1.35 9.3 1.53

5.4 0.77 6.4 0.96 7.4 1.17 8.4 1.37 9.4 1.54

5.5 0.79 6.5 0.98 7.5 1.19 8.5 1.39 9.5 1.56

5.6 0.81 6.6 1.00 7.6 1.21 8.6 1.41 9.6 1.57

5.7 0.83 6.7 1.03 7.7 1.23 8.7 1.43 9.7 1.58

5.8 0.85 6.8 1.05 7.8 1.25 8.8 1.44 9.8 1.60

5.9 0.87 6.9 1.07 7.9 1.27 8.9 1.46 9.9 1.61

36



SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

0.0 0.12 1.0 0.31 2.0 0.63 3.0 0.96 4.0 1.29

0.1 0.13 1.1 0.34 2.1 0.66 3.1 0.99 4.1 1.32

0.2 0.14 1.2 0.37 2.2 0.70 3.2 1.03 4.2 1.36

0.3 0.16 1.3 0.40 2.3 0.73 3.3 1.06 4.3 1.39

0.4 0.17 1.4 0.44 2.4 0.76 3.4 1.09 4.4 1.43

0.5 0.19 1.5 0.47 2.5 0.79 3.5 1.12 4.5 1.46

0.6 0.21 1.6 0.50 2.6 0.83 3.6 1.16 4.6 1.50

0.7 0.24 1.7 0.53 2.7 0.86 3.7 1.19 4.7 1.53

0.8 0.26 1.8 0.57 2.8 0.89 3.8 1.22 4.8 1.57

0.9 0.29 1.9 0.60 2.9 0.93 3.9 1.26 4.9 1.60

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

5.0 1.64 6.0 2.03 7.0 2.46 8.0 2.96 9.0 3.53

5.1 1.67 6.1 2.07 7.1 2.51 8.1 3.02 9.1 3.60

5.2 1.71 6.2 2.11 7.2 2.56 8.2 3.07 9.2 3.66

5.3 1.75 6.3 2.15 7.3 2.61 8.3 3.13 9.3 3.72

5.4 1.79 6.4 2.19 7.4 2.66 8.4 3.18 9.4 3.79

5.5 1.83 6.5 2.24 7.5 2.71 8.5 3.24 9.5 3.86

5.6 1.86 6.6 2.28 7.6 2.76 8.6 3.29 9.6 3.93

5.7 1.90 6.7 2.33 7.7 2.81 8.7 3.35 9.7 4.00

5.8 1.94 6.8 2.37 7.8 2.86 8.8 3.41 9.8 4.07

5.9 1.98 6.9 2.42 7.9 2.91 8.9 3.47 9.9 4.15

37


SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

0.0 0.35 1.0 0.48 2.0 0.95 3.0 1.55 4.0 2.17

0.1 0.34 1.1 0.52 2.1 1.00 3.1 1.61 4.1 2.23

0.2 0.34 1.2 0.56 2.2 1.06 3.2 1.67 4.2 2.29

0.3 0.34 1.3 0.60 2.3 1.12 3.3 1.73 4.3 2.35

0.4 0.35 1.4 0.64 2.4 1.18 3.4 1.80 4.4 2.41

0.5 0.36 1.5 0.69 2.5 1.24 3.5 1.86 4.5 2.47

0.6 0.38 1.6 0.73 2.6 1.30 3.6 1.92 4.6 2.53

0.7 0.40 1.7 0.79 2.7 1.36 3.7 1.98 4.7 2.59

0.8 0.42 1.8 0.84 2.8 1.42 3.8 2.04 4.8 2.65

0.9 0.45 1.9 0.89 2.9 1.49 3.9 2.10 4.9 2.71

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

5.0 2.78 6.0 3.45 7.0 4.29 8.0 5.31 9.0 6.30

5.1 2.84 6.1 3.53 7.1 4.39 8.1 5.42 9.1 6.38

5.2 2.90 6.2 3.61 7.2 4.48 8.2 5.52 9.2 6.45

5.3 2.97 6.3 3.69 7.3 4.58 8.3 5.63 9.3 6.51

5.4 3.03 6.4 3.77 7.4 4.68 8.4 5.73 9.4 6.57

5.5 3.10 6.5 3.85 7.5 4.79 8.5 5.84 9.5 6.61

5.6 3.17 6.6 3.93 7.6 4.89 8.6 5.94 9.6 6.64

5.7 3.24 6.7 4.02 7.7 4.99 8.7 6.03 9.7 6.66

5.8 3.31 6.8 4.11 7.8 5.10 8.8 6.13 9.8 6.66

5.9 3.38 6.9 4.20 7.9 5.21 8.9 6.22 9.9 6.66

38



SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

0.0 1.81 1.0 2.42 2.0 3.21 3.0 4.06 4.0 5.00

0.1 1.85 1.1 2.49 2.1 3.29 3.1 4.15 4.1 5.10

0.2 1.90 1.2 2.57 2.2 3.37 3.2 4.24 4.2 5.20

0.3 1.96 1.3 2.64 2.3 3.46 3.3 4.33 4.3 5.30

0.4 2.02 1.4 2.72 2.4 3.54 3.4 4.42 4.4 5.40

0.5 2.08 1.5 2.80 2.5 3.63 3.5 4.51 4.5 5.50

0.6 2.14 1.6 2.88 2.6 3.71 3.6 4.61 4.6 5.60

0.7 2.21 1.7 2.96 2.7 3.80 3.7 4.70 4.7 5.70

0.8 2.28 1.8 3.04 2.8 3.89 3.8 4.79 4.8 5.80

0.9 2.35 1.9 3.12 2.9 3.97 3.9 4.89 4.9 5.90

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

5.0 6.00 6.0 7.10 7.0 8.30 8.0 9.50 9.0 10.8

5.1 6.10 6.1 7.20 7.1 8.40 8.1 9.60 9.1 10.9

5.2 6.20 6.2 7.30 7.2 8.50 8.2 9.70 9.2 11.0

5.3 6.30 6.3 7.50 7.3 8.60 8.3 9.90 9.3 11.1

5.4 6.40 6.4 7.60 7.4 8.80 8.4 10.0 9.4 11.3

5.5 6.50 6.5 7.70 7.5 8.90 8.5 10.1 9.5 11.4

5.6 6.70 6.6 7.80 7.6 9.00 8.6 10.2 9.6 11.6

5.7 6.80 6.7 7.90 7.7 9.10 8.7 10.4 9.7 11.7

5.8 6.90 6.8 8.00 7.8 9.30 8.8 10.5 9.8 11.9

5.9 7.00 6.9 8.20 7.9 9.40 8.9 10.6 9.9 12.0

39


SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

0.0 2.61 1.0 3.50 2.0 4.90 3.0 6.40 4.0 8.00

0.1 2.68 1.1 3.60 2.1 5.00 3.1 6.60 4.1 8.20

0.2 2.75 1.2 3.80 2.2 5.20 3.2 6.70 4.2 8.30

0.3 2.83 1.3 3.90 2.3 5.30 3.3 6.90 4.3 8.50

0.4 2.92 1.4 4.00 2.4 5.50 3.4 7.00 4.4 8.70

0.5 3.01 1.5 4.20 2.5 5.60 3.5 7.20 4.5 8.80

0.6 3.10 1.6 4.30 2.6 5.80 3.6 7.40 4.6 9.00

0.7 3.20 1.7 4.40 2.7 5.90 3.7 7.50 4.7 9.20

0.8 3.31 1.8 4.60 2.8 6.10 3.8 7.70 4.8 9.30

0.9 3.42 1.9 4.70 2.9 6.20 3.9 7.80 4.9 9.50

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

5.0 9.70 6.0 11.4 7.0 13.3 8.0 15.5 9.0 18.0

5.1 9.80 6.1 11.5 7.1 13.5 8.1 15.7 9.1 18.3

5.2 10.0 6.2 11.7 7.2 13.7 8.2 15.9 9.2 18.6

5.3 10.2 6.3 11.9 7.3 13.9 8.3 16.2 9.3 18.9

5.4 10.3 6.4 12.1 7.4 14.1 8.4 16.4 9.4 19.1

5.5 10.5 6.5 12.3 7.5 14.3 8.5 16.7 9.5 19.4

5.6 10.7 6.6 12.5 7.6 14.5 8.6 17.0 9.6 19.7

5.7 10.8 6.7 12.7 7.7 14.8 8.7 17.2 9.7 20.0

5.8 11.0 6.8 12.9 7.8 15.0 8.8 17.5 9.8 20.3

5.9 11.2 6.9 13.1 7.9 15.2 8.9 17.8 9.9 20.6

40



SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

0.0 5.5 1.0 6.9 2.0 8.9 3.0 11.1 4.0 13.3

0.1 5.6 1.1 7.1 2.1 9.2 3.1 11.3 4.1 13.5

0.2 5.7 1.2 7.3 2.2 9.4 3.2 11.5 4.2 13.8

0.3 5.8 1.3 7.5 2.3 9.6 3.3 11.7 4.3 14.0

0.4 5.9 1.4 7.7 2.4 9.8 3.4 12.0 4.4 14.2

0.5 6.1 1.5 7.9 2.5 10.0 3.5 12.2 4.5 14.5

0.6 6.2 1.6 8.1 2.6 10.2 3.6 12.4 4.6 14.7

0.7 6.4 1.7 8.3 2.7 10.4 3.7 12.6 4.7 14.9

0.8 6.6 1.8 8.5 2.8 10.7 3.8 12.9 4.8 15.2

0.9 6.7 1.9 8.7 2.9 10.9 3.9 13.1 4.9 15.4

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

SettingKvm m³/h

5.0 15.7 6.0 18.2 7.0 20.9 8.0 23.6 9.0 26.4

5.1 15.9 6.1 18.5 7.1 21.2 8.1 23.9 9.1 26.8

5.2 16.2 6.2 18.7 7.2 21.4 8.2 24.2 9.2 27.1

5.3 16.4 6.3 19.0 7.3 21.7 8.3 24.4 9.3 27.4

5.4 16.7 6.4 19.3 7.4 22.0 8.4 24.7 9.4 27.7

5.5 16.9 6.5 19.5 7.5 22.2 8.5 25.0 9.5 28.1

5.6 17.2 6.6 19.8 7.6 22.5 8.6 25.3 9.6 28.4

5.7 17.4 6.7 20.1 7.7 22.8 8.7 25.6 9.7 28.8

5.8 17.7 6.8 20.3 7.8 23.1 8.8 25.8 9.8 29.2

5.9 17.9 6.9 20.6 7.9 23.3 8.9 26.1 9.9 29.6

41

4.6 Measuring accuracy

The measuring accuracy of Nexus Valve Vertex is variable and depends on the valve setting. A high valve setting posi-tion provides a more accurate measuring.


0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 9.9

Position

Kvm deviation in %30

25

20

15

10

5

0

position 0.0-0.9

position 1.0-9.9(recommendedsetting range)

Kvm deviation atposition 2.5 (25% ofthe maximum flow)

The Nexus Valve Vertex DN 10 conforms to the BS standard 7350:1990. At 25% of the flow range the Kvm deviation is only ±7%.


0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 9.9

Position


25

20

15

10

5

0

position 0.0-0.9




42



0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 9.9

Position


13

12

11

10

9

8

7

6

5

4

3

2

1

0

position 0.0-0.9





0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 9.9

Position


9

8

7

6

5

4

3

2

1

0

position 0.0-0.9



The Nexus Valve Vertex DN 25 conforms to the BS standard 7350:1990. At 25% of the flow range the Kvm deviation is only ±4.5%.

43


0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 9.9

Position


9

8

7

6

5

4

3

2

1

0





0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 9.9

Position


9

8

7

6

5

4

3

2

1

0




44



0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 9.9

Position


9

8

7

6

5

4

3

2

1

0




Note! The measuring accuracy is not affected by the flow direction through the Nexus Valve Vertex valve.

45

5. Accessories

There is a wide range of accessories and spare parts available for Nexus Valve Vertex valves. These comprise: insulation jackets, press adaptors, high capacity drain valve and other

Accessories Article Dimension Description

N80597.7000 DN 15 Insulation jackets for Nexus Valve VertexMaterial: expanded polypropyleneColor: anthraciteThermal conductivity: 0,035 W/mK at 10°CApplication: up to 110°CFire protection class: B2, DIN 4102 and E, EN 13501-1

N80597.7010 DN 20

N80597.7020 DN 25

N80597.7030 DN 32

N80597.7040 DN 40

N80597.7050 DN 50

N80597.0001 15 mm x ½" Pre-sealed press adaptors (2 pcs)for valve DN 15 -50, max. 16 bar

N80597.0002 18 mm x ½"

N80597.0003 15 mm x ¾"

N80597.0004 18 mm x ¾"

N80597.0005 22 mm x ¾"

N80597.0006 28 mm x 1"

N80597.0007 35 mm x 1¼"

N80597.0008 42 mm x 1½"

N80597.0009 54 mm x 2"

N80597.0205 DN 15High capacity drain valve (Kv 4,5) ½“ female/female threaded connection

N80597.0206 DN 20 High capacity drain valve (Kv 4,5) ¾“ female/female threaded connection

N80597.0207 DN 25 High capacity drain valve (Kv 4,5) 1“female/female threaded connection

46

6. Sizing example

6.1 Nexus Valve Vertex system sizing

The following sizing example shows Nexus Valve Vertex installed in a system of fan coils. The Nexus Valve Vertex pro-vides the required flow in the branch, and the motorized valves, connected to a BMS system or room thermostats, control the indoor air temperature.

3 2 1

4

System branch with fan coils balanced by Nexus Valve Vertex valves.

The flow to each fan coil is specified for the sizing conditions:Nexus Valve Vertex No. 1: required flow 0.07 l/s (252 l/h)Nexus Valve Vertex No. 2: required flow 0.20 l/s (720 l/h)Nexus Valve Vertex No. 3: required flow 0.25 l/s (900 l/h)Nexus Valve Vertex No. 4: required flow 0.52 l/s (1872 l/h)

The pressure losses have been calculated in the pipes, across the fully open motorized valves and fan coils. Based on the results the following pressure losses across the Nexus Valve Vertex valves must be provided:Nexus Valve Vertex No. 1: required pressure loss 3.0 kPaNexus Valve Vertex No. 2: required pressure loss 7.0 kPaNexus Valve Vertex No. 3: required pressure loss 10.0 kPaNexus Valve Vertex No. 4: required pressure loss 20.0 kPa

The required valve authority and thus good regulation ability are achieved, when valves are sized to meet the required flow and pressure loss, at fully or nearly fully open position.

Pressure drop across valve PositionkPa250

100

10

1

bar2,5

1,0

0,1

0,01Flow

l/sl/h

Nexus Valve Vertex No. 1

0.0054 0.07 0.1 0.148

19.4 252 360 533

9.9

9.08.07.06.0

5.0

4.0

3.02.01.00.0Flow diagram for Nexus Valve Vertex DN 15.

Recommended setting

47

The smallest size Nexus Valve Vertex meeting the requirements is selected for each system circuit. In this case a DN 15 valve at setting 8.5 will reach the required flow of 0.07 l/s and the required pressure loss of 3.0 kPa. This valve size will provide good regulation as any setting change will result in a greater pressure loss than for example in the case of a DN 20 valve. It is therefor easier to adjust a DN 15 valve than a DN 20 valve to the desired flow (see the nextgraph at the end of this page).

The Nexus Valve Vertex DN 15 setting range for 0.7 l/s flow is 9.9 - 1.4 = 8.5The Nexus Valve Vertex DN 20 setting range for 0.7 l/s flow is 6.8 - 1.0 = 5.8The DN 15 valve is preferred as it is easier to set the valve to the required flow comparred to the DN 20 valve due tothe higher setting resolution.


100

10

7

3

1

bar2.5

1.0

0.1

0.07

0.03

0.01Flow

l/sl/h

9.99.08.07.06.0

5.0

4.0

3.02.01.00.0




0.0153 0.7 0.1 0.2 0.25 0.325

55 252 360 720 900 1170

Flow diagram for Nexus Valve Vertex DN 20.

Not recommendedsetting

Recommended setting


100

20

10

1

bar2.5

1.0

0.1

0.01Flow

l/sl/h

9.9

9.0

8.0

7.06.05.0

4.0

3.02.01.00.0


0.0232 0.05 0.1 0.2 0.3 0.4 0.52 0.603

83.5 180 360 720 1080 1440 1872 2171

Flow diagram for Nexus Valve Vertex DN 25.

Recommended setting

For the 0.20 l/s and 0.25 l/s flow Nexus Valve Vertex DN 20 is selected and for the 0.52 l/s flow Nexus Valve Vertex DN 25 is selected.

48

6. Sizing example

The valves are set at:Nexus Valve Vertex No. 1: DN 15, setting 8.5Nexus Valve Vertex No. 2: DN 20, setting 7.2Nexus Valve Vertex No. 3: DN 20, setting 7.4Nexus Valve Vertex No. 4: DN 25, setting 6.9

Ordering:Nexus Valve Vertex No. 1 Article No.: N80597.700Nexus Valve Vertex No. 2, 3 Article No.: N80597.701Nexus Valve Vertex No. 4 Article No.: N80597.702

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6.2 General specifications DN 10-50

1 Balancing valve DN 10 - 501.1. The Contractor must install static balancing valves where indicated in drawings.

2. Valve Body2.1. The valve body must be made of hot stamped DR brass CW602N CuZn36Pb2As.2.2. The pressure rating must be no less than PN25 (PN16 with press adaptors).2.3. The valve must be able to perform regulation, isolation and flow measurement in one single unit.2.4. The valve must be bi-directional to flow, and no flow arrow must be indicated in the valve body.2.5. The handle and the P/T ports must be perpendicular to each other.2.6. Testing through measuring points must be possible in all valve positions.2.7. One measuring point must be installed in front of the isolation ball and the other behind the isolation ball.2.8. The size of the valve must be clearly marked on the handle.

3. Flow Regulation3.1. The flow setting must be externally adjustable by means of an Allen key.3.2. The flow setting must remain unchanged when the isolation (open/close) function is operated.3.3. Flow measurement must be done across a ball with a built-in regulating needle.

4. Functions4.1 The valve must have a visible quarter-turn open/close function.4.2. The valve must have scale of 100 different setting positions at an 0.1 increment.4.3. Flow through the valve must be possible in both directions at the same Kv-value.

50

Notes

50

Contact

Contact data

www.flamcogroup.com

meibes System-Technik GmbH · Ringstraße 18 · D-04827 Gerichshain

Phone + 49(0) 3 42 92 7 13-0 · Fax + 49(0) 3 42 92 7 13-808

[email protected] · www.meibes.de

meibes-group

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x V

alid

sin

ce 1

9-01

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